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Signal Circuit Inspection

  1. IG "OFF" and disconnect HO2S (B1/S2) connector.
  2. IG "ON".
  3. Measure voltage between signal terminal of HO2S (B1/S2) harness connector and chassis ground.

    Specification:  Approx. 0.45V

    Fig 1: Measuring Voltage Between Signal Terminal Of HO2S (B1/S2) Harness Connector And Chassis Ground
    G08814072Courtesy of HYUNDAI MOTOR AMERICA
  4. Is the measured voltage within specification?

    YES 

    Go to "GROUND CIRCUIT INSPECTION " procedure.

    NO 

    Repair short to battery in harness, and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

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